/* 
 *      TaggedToken.java
 *
 *      Copyright 2008 Pablo Nicolas Diaz Bilotto <pablonicolas.diaz@gmail.com>
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 *      MA 02110-1301, USA.
 */
package lexer.token;


/**
 * The Class TaggedToken.
 */
public class TaggedToken extends Token {

	/** The instance. */
	private static TaggedToken instance;

	/**
	 * Gets the single instance of TaggedToken.
	 * 
	 * @param LN the lN
	 * @param Op the op
	 * 
	 * @return single instance of TaggedToken
	 */
	public static TaggedToken getInstance(int LN, TokenEnum Op) {
		if (null == instance) {
			instance = new TaggedToken(LN, Op);
		} else {
			instance.setKind(Op);
			instance.setLineNro(LN);
		}
		return instance;
	}

	/**
	 * Instantiates a new tagged token.
	 * 
	 * @param LN the lN
	 * @param Op the op
	 */
	private TaggedToken(int LN, TokenEnum Op) {
		super(LN, Op);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see lexer.token.Token#getValue()
	 */
	@Override
	public Object getValue() {
		return "";
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see lexer.token.Token#token_to_yacc()
	 */
	@Override
	public int token_to_yacc() {
		return getKind().retValue();
	}
}
